Electronic cigarette

ABSTRACT

An electronic cigarette is provided, comprising: a suction nozzle cover, wherein, a surface of the suction nozzle cover corresponding to a mouth cavity of a user of the electronic cigarette is concave. In the electronic cigarette of the present invention, because the suction nozzle cover includes a buffering function of concave, when the two sides of the suction nozzle cover are pressed and/or squeezed by the radial force, and the suction nozzle cover generates a tendency of motion to inside body, thereby the suction nozzle cover is prevented from falling off from the electronic cigarette; furthermore, the user will feel more flexible when using the electronic cigarette with that structure, and user&#39;s experience is improved; moreover, it can avoid sucking the tobacco oil when a little tobacco oil flows from the suction inlet.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Patent Application No. PCT/CN2013/075640, with an international filing date of May 15, 2013, designating the United States, now pending. The contents of these specifications are incorporated herein by reference.

FIELD OF THE INVENTION

The present invention relates to the field of electrical heating products technology, and more particularly, relates to an electronic cigarette.

BACKGROUND OF THE INVENTION

Because domestic publicity of anti-smoking and the people's awareness of health are enhanced, electronic cigarettes, which serve as the substitute of traditional tobacco, have been more and more widely used. An existing electronic cigarette generally comprises a cigarette rod and a cigarette holder fixed together. The cigarette rod includes a battery received therein, the cigarette holder includes an atomization device received therein, and the atomization device is electrically connected to the cigarette rod. The cigarette holder further includes an oil cup received therein for accommodating tobacco juice. When a user starts to smoke via the cigarette holder, the tobacco juice flows into the atomization device slowly, and an atomization wire of the atomizer absorbs the tobacco juice. A control circuit board detects electric current and controls a heating device positioned adjacent to the atomization wire to atomize the tobacco juice and generate smoke, and the smoke flows through a suction nozzle cover and is inhaled by the user.

In the prior art, an end of the suction nozzle cover of the electronic cigarette is a flat surface. When the suction nozzle cover is pressed or squeezed by an external force, there is a hidden danger that the suction nozzle cover may drop, and it is inconvenience to users.

SUMMARY OF THE INVENTION

The object of the present invention aims at the drawbacks that the end of the suction nozzle cover of the existing electronic cigarette is a flat surface, and that the suction nozzle cover may drop when the suction nozzle cover is pressed or squeezed by an external force, and provides an electronic cigarette, wherein the suction nozzle cover of the electronic cigarette recesses inward to form a concave, the tendency of motion of the suction nozzle cover is changed when the suction nozzle cover is pressed or squeezed by an external force, and the suction nozzle cover is prevented from falling off.

The technical solutions of the present invention for solving the technical problems are as follows:

An electronic cigarette is provided, which comprises a suction nozzle cover, wherein, a surface of the suction nozzle cover corresponding to a mouth cavity of a user of the electronic cigarette is concave.

Advantageously, a section of the concave is any one of an arc-shaped groove, a rectangular groove, a V-groove, a W-groove, and a trapezoid groove.

Advantageously, the suction nozzle cover includes a hollow body, a first end and a second end, the second end recesses inward to form the concave, and the second end defines at least one suction inlet therein; when the suction nozzle cover is pressed or squeezed by a radial external force, an inward force along the axis of the second end is greater than an outward force along the axis of the second end.

Advantageously, the electronic cigarette further comprises an outer sleeve, the body is sleeved inside the outer sleeve, and the first end is mounted on the outer sleeve.

Advantageously, the trapezoid groove is an isosceles trapezoid groove.

Advantageously, an angle formed by a side edge of the isosceles trapezoid groove and a center axis of the outer sleeve is 10°˜40°.

Advantageously, a vertical distance from an intersection between the second end and a center axis of the body to the first end is 0.3 cm˜1 cm.

Advantageously, the suction inlet includes a pierced hole defined in the second end and a through hole axially extending from the edge of the pierced hole to the body.

Advantageously, an inner diameter of the through hole is equal to an inner diameter of the pierced hole.

Advantageously, the first end, the body, the second end and the through hole are integrally formed.

Advantageously, a lateral wall of the body forms a protruding buckle, an inner wall of the outer sleeve corresponding to the buckle forms a card slot, and the buckle is buckled with the card slot.

Advantageously, a lateral wall of the body forms a card slot, an inner wall of the outer sleeve corresponding to the card slot forms a protruding buckle, and the buckle is buckled with the card slot.

When implementing the electronic cigarette of the present invention, the following advantageous effects can be achieved: since the second end recesses inward to form the concave, when the two sides of the suction nozzle cover are pressed and/or squeezed by the radial force, the inward force along the axis of the second end is greater than the outward force along the axis of the second end, and the suction nozzle cover generates a tendency of motion inward the body, thereby preventing the suction nozzle cover from falling off from the electronic cigarette; furthermore, a user will feel more flexible when using the electronic cigarette with that structure, and the user's experience is improved; moreover, it can avoid the user sucking the tobacco oil when a little tobacco oil flows from the suction inlet.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be further described with reference to the accompanying drawings and embodiments in the following, in the accompanying drawings:

FIG. 1 illustrates a state when a suction nozzle cover of a typical electronic cigarette is pressed and/or squeezed by an external force;

FIG. 2 illustrates a state when a suction nozzle cover of an electronic cigarette of the present invention is pressed and/or squeezed by an external force;

FIG. 3 is a cutaway view of a suction nozzle cover of a first embodiment of the present invention;

FIG. 4 is a cutaway view of a suction nozzle cover of a second embodiment of the present invention;

FIG. 5 is a cutaway view of a suction nozzle cover of a third embodiment of the present invention;

FIG. 6 is a cutaway view of a suction nozzle cover of a fourth embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

To make the technical feature, objective and effect of the present invention be understood more clearly, now the specific implementation of the present invention is described in detail with reference to the accompanying drawings and embodiments.

As shown in FIG. 1, a state when a suction nozzle cover of a typical electronic cigarette is pressed and/or squeezed by an external force is illustrated. Because an end of the existing suction nozzle cover is a flat surface, when the two outer sides of the suction nozzle cover are pressed and/or squeezed by an radial force and the radial force is perpendicular to the outer sleeve of the typical electronic cigarette, the suction nozzle generates an outward tendency of motion along the axial direction (i.e., the direction of escaping from the outer sleeve), then the suction nozzle may fall off from the electronic cigarette, resulting in that the electronic cigarette cannot be sucked by a user, and the user's experience may be adversely affected.

As shown in FIG. 2 and FIG. 3, an electronic cigarette of a first embodiment of the present invention comprises an outer sleeve 10 and a suction nozzle cover 20. Wherein the outer sleeve 10 is substantially a hollow cylinder, the suction nozzle cover 20 is sleeved inside the outer sleeve 10, and the outer sleeve 10 and the suction nozzle cover 20 are detachably connected with each other or integrally formed. The outer sleeve 10 can be a sleeve of an atomizer or a battery, or a sleeve that sleeves both the atomizer and the battery. The outer sleeve 10 can also be a part of the atomizer.

The suction nozzle cover 20 is substantially a hollow cylinder, and is made of silicone material, which has good flexibility and corrosion-resistant character. Understandably, the suction nozzle cover 20 can also be made of other flexible material such as rubber. A surface of the suction nozzle cover 20 corresponding to a mouth cavity of a user of the electronic cigarette is a concave 230. When the two outer sides of the suction nozzle cover 20 are pressed and/or squeezed by an radial force and the radial force is perpendicular to the outer sleeve 10, the suction nozzle 20 generates an inward tendency of motion along the axial direction (i.e., the direction towards inside body), and the suction nozzle cover 20 is prevented from falling off.

The suction nozzle cover 20 includes a hollow body 220, a first end 210 and a second end 240. Wherein, the body 220 is a hollow cylinder and is sleeved inside the outer sleeve 10, the first end 210 is mounted on the outer sleeve 10, and the second end 240 recesses inward to from the concave 230. The second end 240 defines at least one suction inlet 242 therein, a user can inhale the smoke atomized in the electronic cigarette via the suction inlet 242. The suction inlet 242 includes a pierced hole 2422 defined in the second end 240 and a through hole 2424 axially extending from the edge of the pierced hole 2422 to the body 220, and an inner diameter of the through hole 2424 is equal to an inner diameter of the pierced hole 2422. The suction inlet 242 can be set in the center axis of the body 220, and can also deviate from the center axis of the body 220. When the electronic cigarette has a plurality of suction inlets 242, the a plurality of suction inlets 242 can be arranged equidistantly and symmetrically. In the embodiment, a shape of the suction inlet 242 is any one of triangle, polygons (such as pentagons or hexagons), and oval. The number of the suction inlet 242 is no limited, that is, can be one or more. When the number of the suction inlet 242 is small, a flow of the smoke will be smaller; and when the number of the suction inlet 242 is large, a flow of the smoke is larger.

To prevent the suction nozzle cover 20 from being ejected from the outer sleeve 10 and being accidentally swallowed by users, a snap-fit connection is formed between the suction nozzle cover 20 and the outer sleeve 10. Specifically a lateral wall of the body 220 forms a protruding buckle 222, and an inner wall of the outer sleeve 10 corresponding to the buckle 222 forms a card slot (not shown) buckled with the buckle 222, and the suction nozzle cover 20 is detachably connected with the outer sleeve 10 through the snap-fit connection formed between the buckle 222 and the card slot. Understandably, in other embodiments, a lateral wall of the body 220 forms a card slot (not shown), an inner wall of the outer sleeve 10 forms a buckle (not shown) configured to buckled with the card slot, and the outer sleeve 10 is detachably connected with the suction nozzle cover 20 through the snap-fit connection formed between the buckle and the card slot.

Because the concave 230 has a certain buffering function, when the two sides of the suction nozzle cover 20 are pressed and/or squeezed by the radial force, and the radial force is perpendicular to the outer sleeve 10, an inward force along the axis (i.e., the force facing inside of the body 220) of the second end 240 is greater than an outward force (i.e., the facing outside the body 220), and thereby the tendency of motion of the suction nozzle cover 20 is changed. That is, when the suction nozzle cover 20 is pressed and/or squeezed by the external force, the suction nozzle cover 20 generates an inward tendency of motion to the outer sleeve 10, and thereby the suction nozzle cover 20 is prevented from falling off the electronic cigarette, and the user's experiences is improved.

As shown in FIG. 2, which illustrates a state when the suction nozzle cover 20 of the electronic cigarette of the present invention is pressed and/or squeezed by an external force. Because the suction nozzle cover 20 includes the concave 230 a that has a buffering function, when the two outer sides of the suction nozzle cover 20 are pressed and/or squeezed by the radial external force, the suction nozzle cover 20 generates a tendency of motion inward the body 220, and thereby the suction nozzle cover 20 is prevented from falling off the electronic cigarette; and the user's experiences is improved.

As shown in FIG. 3, an electronic cigarette of a first embodiment of the present invention is provided. In this embodiment, the concave 230 includes a first line segment 232 and a second line segment 234 which are arranged in parallel, a first arc segment 236 connected with the first line segment 232, and a second arc segment 238 connected with the second line segment 234. The first line segment 232, the second line segment 234, the first arc segment 236 and the second arc segment 238 cooperatively form the concave 230. The first line segment 232 and the second line segment 234 are respectively installed on two relative edges of the body 220, an end of the first arc segment 236 and an end of the second arc segment 238 are connected with the suction inlet 242, and both the first arc segment 236 and the second arc segment 238 are installed on the second end 240.

A vertical distance from an intersection between the second end 240 and a center axis of the body to the first end is 0.3 cm˜1 cm, that is, a maximum depth of the concave 230 is 0.3 cm˜1 cm. If the maximum depth of the concave 230 is less than 0.3 cm, when the electronic cigarette is squeezed and/or pressed by the external forces, the tendency of motion of the suction nozzle cover 20 cannot be changed effectively, and therefore a hidden danger that the suction nozzle cover 20 may drop may be caused; if the maximum depth of the concave 230 is larger than 1 cm, it may be inconvenience to users when smoking the electronic cigarette. Preferably, the maximum depth of the concave 230 is 0.6 cm. The first end 210, the body 220, the second end 240, and the through hole 2424 are integrally formed, so that it is easy to be produced and the overall effect is good.

As shown in FIG. 4, an electronic cigarette of a second embodiment of the present invention is provided. The second embodiment differs from the first embodiment in that: the section of the concave 230 is an arc-shaped groove, and the first end 210 includes an upper end 212 and a bottom end 214, the upper end 212 recesses inward to form the arc-shaped groove is, and the chord length of the arc-shaped groove equals to the inner diameter of the body 220.

As shown in FIG. 5, an electronic cigarette of a third embodiment of the present invention is provided. The third embodiment differs from the first embodiment in that: the section of the concave 230 is a rectangular groove, and the width of the rectangular groove equals to the inner diameter of the body 220.

As shown in FIG. 6, an electronic cigarette of a fourth embodiment of the present invention is provided. The fourth embodiment differs from the first embodiment in that: the section of the concave 230 is an isosceles trapezoid groove, an angle formed by a side edge of the isosceles trapezoid groove and a center axis of the outer sleeve 10 is 10°˜40°, preferably, the angle formed by the side edge of the isosceles trapezoid groove and the center axis of the outer sleeve 10 is 20°.

In the electronic cigarette of the present invention, since the second end 240 recesses inward to form the concave 230, when the two sides of the suction nozzle cover 20 are pressed and/or squeezed by the radial force, the inward force of the second end 240 is greater than the outward force, and the suction nozzle cover 20 generates a tendency of motion to inside body 220, thereby the suction nozzle cover 20 is prevented from falling off from the electronic cigarette. Furthermore, the user will feel more flexible when using the electronic cigarette with that structure, and user's experience is improved; moreover, it can prevent the tobacco oil being sucked when a little tobacco oil flows from the suction inlet 242.

While the embodiments of the present invention are described with reference to the accompanying drawings above, the present invention is not limited to the above-mentioned specific implementations. In fact, the above-mentioned specific implementations are intended to be exemplary not to be limiting. In the inspiration of the present invention, those ordinary skills in the art can also make many modifications without breaking away from the subject of the present invention and the protection scope of the claims, such as the section of the concave 230 is V-groove or W-groove. All these modifications belong to the protection of the present invention. 

What is claimed is:
 1. An electronic cigarette, comprising a suction nozzle cover, wherein, a surface of the suction nozzle cover corresponding to a mouth cavity of a user of the electronic cigarette is concave.
 2. The electronic cigarette according to claim 1, wherein, a section of the concave is any one of an arc-shaped groove, a rectangular groove, a V-groove, a W-groove, and a trapezoid groove.
 3. The electronic cigarette according to claim 1, wherein, the suction nozzle cover includes a hollow body, a first end and a second end, the second end recesses inward to form the concave, and the second end defines at least one suction inlet therein; when the suction nozzle cover is pressed or squeezed by a radial external force, an inward force along the axis of the second end is greater than an outward force along the axis of the second end.
 4. The electronic cigarette according to claim 3, wherein, the electronic cigarette further comprises an outer sleeve, the body is sleeved inside the outer sleeve, and the first end is mounted on the outer sleeve.
 5. The electronic cigarette according to claim 2, wherein, the trapezoid groove is an isosceles trapezoid groove.
 6. The electronic cigarette according to claim 5, wherein, an angle formed by a side edge of the isosceles trapezoid groove and a center axis of the outer sleeve is 10°˜40°.
 7. The electronic cigarette according to claim 3, wherein, a vertical distance from an intersection between the second end and a center axis of the body to the first end is 0.3 cm˜1 cm.
 8. The electronic cigarette according to claim 3, wherein, the suction inlet includes a pierced hole defined in the second end and a through hole axially extending from the edge of the pierced hole to the body.
 9. The electronic cigarette according to claim 8, wherein, an inner diameter of the through hole is equal to an inner diameter of the pierced hole.
 10. The electronic cigarette according to claim 9, wherein, the first end, the body, the second end and the through hole are integrally formed.
 11. The electronic cigarette according to claim 3, wherein, a lateral wall of the body forms a protruding buckle, an inner wall of the outer sleeve corresponding to the buckle forms a card slot, and the buckle is buckled with the card slot.
 12. The electronic cigarette according to claim 3, wherein, a lateral wall of the body forms a card slot, an inner wall of the outer sleeve corresponding to the card slot forms a protruding buckle, and the buckle is buckled with the card slot. 